I Choose Correct Answer To

Question	Choose the correct answer:
Title	2685
QType (0=kprim,1=mc,2=sc)	2
Q_1	I used to doing it.
Q_2	I am used to doing it.
Q_3	I use to doing it.
Answers	0 1 0

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Next card: Affair matter concern business thing 这组词都有“事情”的意思，其区别是：affair 含义较广，侧重指已发生或必须去做的任何事情或事务。复数形式多指重大或较复杂的事务。matter 普通用词，着重指一件考虑中的或需要处理的事。concern

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